<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>$01_浮动布局$</title>
    <style>
      .fu{
        background-color: yellow;
        width: 500px;
        /*overflow: hidden;*/
      }
      .fu>div{
        width:100px;
        height:100px;
      }
      .z1{
        background-color: red;
        /*float:right;*/
        float: left;
      }
      .z2{
        background-color: green;
        /*float:right;*/
        float: left;
      }
      .z3{
        background-color: blue;
        /*float: right;*/
        float: left;
      }
    </style>
</head>
<body>
    <div class="fu">
      <div class="z1">111</div>
      <div class="z2">222</div>
      <div class="z3">333</div>
    </div>
</body>
</html>